I put this one together with mostly spare parts. Started with a 20" yard sale Bicycle. Cut the back off and welded up the rear frame and foot rests. I cannibalized a Razor Eco Smart scooter for the electrics. Rear motor chain drive. 500 watt/36 volt. 20" front wheel and 12" rear wheels from a Barbi bike. Aftermarket springer and Sunlite trike seat (Way Comfy). Finished off with a gold base coat and Roth Ghetto Gold metal flake. My son gets credit for his excellent design sense and build decisions. This one continues the compact, lightweight, unique design theme.